If you work part time for a big company are you eligible for FMLA?

My friend is due on end of May, and is only working part time however, when she applied for FMLA she was denied because her hours was not met. She started working there around August. So now she is kind of worried that she might not have a job after her maternity leave. Does she have other options? She's still waiting for the FMLA response for her other options, but if you guys know abit about FMLA rules or options for part timers please share. Its hard to see a friend stressing out. Thank you.